# My homework for pre calc class. Its not calc though.

• Jan 24th 2013, 05:27 PM
nngk2
My homework for pre calc class. Its not calc though.
I have two problems that i need to help solving.
Can someone solve them for me and show the work?

The Mathelte team is 37.5% female. If no additional boys join the team, what is the smallest number of girls who can join the team to raise the percentage to exactly 45%?

And the second problem is

The probability that statement P is true is 3/7, and the probability that statement Q is true is 5/12. Determine the probability that P --> Q is true.

Thanks for the help.
• Jan 24th 2013, 05:49 PM
HallsofIvy
Re: My homework for pre calc class. Its not calc though.
Quote:

Originally Posted by nngk2
I have two problems that i need to help solving.
Can someone solve them for me and show the work?

The Mathelte team is 37.5% female. If no additional boys join the team, what is the smallest number of girls who can join the team to raise the percentage to exactly 45%?

Suppose there are N people on the team. Then 0.375N are female. What is the smallest value of N that will make that an integer?

If x girls joint the team there will be 0.375N+ x girls and N+ x people. If there are enough to make the number of girls 45, then we must have 0.375N+ x= 0.45(N+ x). Multiply the right side and solve for x. Remember that all those numbers must be integers.

And the second problem is

The probability that statement P is true is 3/7, and the probability that statement Q is true is 5/12. Determine the probability that P --> Q is true.

Thanks for the help.[/QUOTE]
• Jan 24th 2013, 06:30 PM
nngk2
Re: My homework for pre calc class. Its not calc though.
Does N=8? I still can't solve it